MATHEMATICS HIGH SCHOOL

What is the slope and y-intercept of this line?y = –3x + 9
A. slope: 3, y-intercept: –9
B. slope: –3, y-intercept: 9
C. slope: 1, y-intercept: –3
D. slope: 9, y-intercept: –3

Answers

Answer 1
Answer:

The slope and y-intercept of the given line are -3 and 9 respectively.

What is equation of a line?

The general equation of a line in two variables of the first degree is represented as Ax + By +C = 0, A, B ≠ 0 where A, B and C are constants which belong to real numbers.

When we represent the equation geometrically, we always get a straight line.

Given that, an equation of a line y = -3x+9, we need to determine the slope and the y-intercept of this line,

The slope of a line tell about the steepness and the y-intercept tells the point where it intersects the y-axis,

The slope-intercept form of the equation of a line is given by ;

y = mx+c

Here, m is the slope and c is the y-intercept,

So, the given equation is y = -3x+9

Comparing with the slope-intercept form,

m = -3 and y-intercept = 9

Hence, the slope and y-intercept of the given line are -3 and 9 respectively.

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Answer 2
Answer: Slope is -3
Y-intercept is 9

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Solve for a and b(6a-3)=(7b-10)

The expression -6a - 4a + 7a in simplified form is 5a.
a. True
b. False

Answers

Answer:

It would be -3a

Step-by-step explanation:

(-6-4+7)a
-6a - 4a + 7a = -10a + 7a = -3a, that isn't 5a;
b. False

A ladder is 95 inches tall. How tall is it in feet and inches

Answers

The answer is 7.91667 in feet but it is ninety five in inches.
 The ladder is about 7' 9''

Helpp with bothhhh!!!!!

Answers

Answer:

3. x = 5

4. -5 1/25

Step-by-step explanation:

-3x+5=-10

Subtract the 5 from both sides...

-3x = -15

Divide by -3

x = 5

For 4, it's just multiplying.

-2 4/5 in improper form is -14/5

1 4/5 in improper form is 9/5

-14/5 x 9/5 is -126/25

-126/25 can be -5.04 or -5 1/25.

Answer:

3. a (x=5)

4. -126/25

Step-by-step explanation:

3. -3x+5=-10

-3x=-10-5

-3x=-15

x=5

4.  -(-2 4/5) x 1 4/5

(-14/5) x 9/5

= -126/25

Solve the equation for the given variable.
Bx+Cy=D

Solve for y

Answers

Bx + Cy = D

Solve for y . .  .

*subtract Bx from both sides

Bx - Bx + Cy = D - Bx

Cy = D - Bx

*now divide both sides by C

Cy/C = (D - Bx)/C

Cy/C = D/C - Bx/C

y = D/C - (B/C)x

y = -(B/C)x + D/C
Bx+Cy=D -- subtract Bx

Cy=D-Bx -- divide by C

y=(D-Bx)/C

Write the improper fraction 33/10 as a mixed number

Answers

the answer is 3 3/10

hope this helps
Answer = 3 3/10

there’s 33 take away the ones that go to ten.

10 10 and 10 is 30. Therefore it’s 3 and 3/10

Find the value of x so that the ratios are equivalent 9:x and 54:8 i cant seem to get it i tried 48 but it said it was wrong

Answers

Answer:

The answer is 48

Step-by-step explanation:
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