8th Grade Math Review!

Combine like terms:  $2\left(x-5\right)+3x+15$  

•  $10x$  

•  $5x+5$  

•  $5x+25$  

Combine like terms: $-1\left(x-4\right)+3\left(1+x\right)$  

•  $9x$  

•  $4x-1$  

•  $2x+7$  

Find the value of the expression: $3x^2-2\$ if $x=2$  

• 10

• 34

• 4

Find the value of the expression: $-2x^2+10$  if  $x=-3$  

•  $28$  

•  $46$  

•  $-8$  

Solve the following equation for x: $-3=-15-2\left(x-1\right)-3x$  

•  $2$  

•  $-2$  

•  $4$  

Solve the following equation for x: $7\left(2x-3\right)-5x=-3$  

•  $-\frac{8}{3}$  

•  $2$  

•  $-2$  

Identify the correct slope and y-intercept for the equation: $y=5x-9$  

• Slope is  $5$  

• Slope is  $-9$  

• Y-Intercept is  $\left(0,5\right)$  

• Y-Intercept is  $\left(0,-9\right)$  

Identify the correct slope and y-intercept for the equation: $y=\frac{1}{2}x+2$  

• Slope is  $2$  

• Slope is $\frac{1}{2}$  

• Y-Intercept is  $\left(0,2\right)$  

• Y-Intercept is $\left(0,\ \frac{1}{2}\right)$  

Write the equation in slope-intercept form (get y alone!): $-9x+3y=12$  

•  $y=3x+4$  

•  $y=-3x+4$  

•  $y=3x+12$  

Write the equation in slope-intercept form (get y alone!): $4y+2x=4$  

•  $y=-\frac{1}{2}x+4$  

•  $y=\frac{1}{2}x+1$  

•  $y=-\frac{1}{2}x+1$