Graphing Linear Equations by Slope Intercept Form

What is the first step in solving a system by graphing?

• Write both linear equations in slope-intercept form

• Get x by itself

• Compare the slopes of both equations

• Write both equations in standard form

Buzz graphed two lines in order to find the solution to a given system of equations.
What is the solution?

• (-1, 4)

• (1, -4)

• (-4, 1)

• (4, -1)

When you graph the exact same equation twice,

• you will have no solution. 

• you will have one solution.

• you will have infinite solutions. 

• you will graph a giraffe. 

Graph a line with a y-intercept of 1 and slope of 3.

Which is the graph of the equation ? \[y = -x + 2\]

• A

• B

• C

• D

Answer explanation

You need three points. 1 at the y-axis, 1 left of the y-axis, & 1 right of the y-axis

Tags

AI.9.2.B

Graph the equation y = 2/3x - 4. Move the dots to represent the y-intercept and the next point after using the slope.

• 3 units up, 4 units right

• 2 units up

• 3 unit down, 4 units right

• 4 units down, 3 units right

• 4 units up, 3 units right

• 2 units down

Answer explanation

DON'T SKIP THIS!

Perform the correct steps until you have plotted all possible visible points. (The final graph will be shown after the next equation.)

• 10 units up

• 2 units down, 1 unit right

• 10 units down

• 1 unit down, 2 units right

• 2 units up, 1 unit right

• 1 unit up, 2 units right

Answer explanation

DON'T SKIP THIS!

Perform the correct steps until you have plotted all possible visible points. If correct, the graph of both equations should match the picture shown.

• 3 units up, 2 units right

• 6 units down

• 3 units down, 2 units right

• 2 units down, 3 units right

• 2 units up, 3 units right

• 6 units up

Answer explanation

DON'T SKIP THIS!

Perform the correct steps until you have plotted all possible visible points. (The final graph will be shown after the next equation.)