Graphs of Linear Equation in Two Variables

Which of the following is the standard form of a linear equation in two variables?

• 𝑦 = 𝑚𝑥 + 𝑏

• 𝑦 = 𝑚𝑥 – 𝑏

• 𝐴𝑥 + 𝐵𝑦 = 𝐶

• 𝐴𝑥 - 𝐵𝑦 = 𝐶

In the equation  $y=-4x+1$ , what is the slope?

(a)  

What is the slope of the equation when the graph shows horizontal line?

(a)  

What is the  $y=mx+b$  form of the equation $x-y=10$  ?

•  $y=x+10$  

•  $y=-x-10$  

•  $y=x-10$  

•  $y=-x+10$  

Which of the following describe the positive slope?

• rising line

• falling line

• vertical line

• horizontal line

What is the slope of the equation when the graph shows vertical line?

• zero

• positive

• negative

• undefined

What is the equation of the line if the slope is  $7$  and y-intercept is  $-2$  ?

•  $y=7x+2$  
  

•  $y=-7x+2$  
  

•  $y=-7x-2$  
  

•  $y=7x-2$  
  

If a graph passes through points  $\left(2,\ 5\right)$  and  $\left(0,\ 1\right)$ , what is the slope of a line?

•  $-1$  
  

•  $0$  
  

•  $1$  
  

•  $2$  
  

If the slope is negative and y-intercept is $3$ , what is the graphs description?

• The graph is increasing from left to right and intersect point at $\left(0,\ 3\right)$ .
  

• The graph is increasing from left to right and intersect point at $\left(3,\ 0\right)$ .

• The graph is decreasing from left to right and intersect point at $\left(0,\ 3\right)$ .
  

• The graph is decreasing from left to right and intersect point at $\left(3,\ 0\right)$ .
  

If the slope is  $-4$  and point Q is located at the origin, which of the following shows the movement of the graph to the next point?

• From the origin the graph moves 4 units to the right and 1 unit down.

• From the origin the graph moves 1 unit to the right and 4 units down.
  

• From the origin the graph moves 4 units to the left and 1 unit down.
  

• From the origin the graph moves 1 unit to the left and 4 units down.