Algebra 1 Chapter 3 Review

Write in slope-intercept form.

 $2x+3y=9$  

• It is in slope-intercept form

•  $3y\ =\ -2x\ +\ 9$  

•  $y=-\frac{2}{3}x+3$  

•  $x=-\frac{3}{2}y+\frac{9}{2}$  

What are the intercepts.

 $4x+4y=-16$  

• x-int: 4  y-int: 4

• x-int: -4 y-int: 4

• x-int: -4 y-int: -4

• x-int: 8 y-int: -8

Find the slope of the line that passes through the points.

 $\left(-1,\ 11\right)\ and\ \left(2,\ 10\right)$  

•  $\frac{3}{1}$  

•  $-7$  

•  $\frac{1}{3}$  

•  $-\frac{1}{3}$  

To graph the equation, find the y-intercept and slope.

 $y=4x-3$  

• y-int: 3 and slope: 4

• y-int: -3 and slope: 3

• y-int: -3 and slope: 1/4

• y-int: -3 and slope: 4

You plot the point (3, 4), the slope is

 $-\frac{1}{2}$  what would be the next point, using the slope?

• (-3, 5)

• (5, 3)

• (6, -1)

• (5, 1)

Which equation show direct variation AND the correct constant of variation.

• $y=4x;\ -2$

• $y=3x+1;\ 3$

• $y=-3x;\ -3$

• $y=7x-2;\ 7$

Evaluate the function.

 $f\left(x\right)=2x-3\ when\ x=7$  

• 5

• 11

• 17

• None of these

Find the value of x so that the function has the given value.

 $m\left(x\right)=-12x+36;\ -24$  

• 5

• -5

•  $\frac{3}{4}$  

• -1

Which graphs shows  $y=-\frac{2}{3}x+2$  

• 
• 
• 
• None of these

When comparing two graphed functions, we look for 3 things. Which one answer is NOT what we compare?

• Positive/Negative slope

• Y-intercepts

• Same slope (parallel)

• A point