# Graph y=-2x-4 y=-2x-4
Use the slope-intercept form to find the slope and y-intercept.
The slope-intercept form is y=mx+b, where m is the slope and b is the y-intercept.
y=mx+b
Find the values of m and b using the form y=mx+b.
m=-2
b=-4
The slope of the line is the value of m, and the y-intercept is the value of b.
Slope: -2
y-intercept: -4
Slope: -2
y-intercept: -4
Any line can be graphed using two points. Select two x values, and plug them into the equation to find the corresponding y values.
Choose 0 to substitute in for x to find the ordered pair.
Replace the variable x with 0 in the expression.
f(0)=-2⋅0-4
Simplify the result.
Multiply -2 by 0.
f(0)=0-4
Subtract 4 from 0.
f(0)=-4
The final answer is -4.
-4
-4
The y value at x=0 is -4.
y=-4
y=-4
Choose 1 to substitute in for x to find the ordered pair.
Replace the variable x with 1 in the expression.
f(1)=-2⋅1-4
Simplify the result.
Multiply -2 by 1.
f(1)=-2-4
Subtract 4 from -2.
f(1)=-6
The final answer is -6.
-6
-6
The y value at x=1 is -6.
y=-6
y=-6
Create a table of the x and y values.
xy0-41-6
xy0-41-6
Graph the line using the slope and the y-intercept, or the points.
Slope: -2
y-intercept: -4
xy0-41-6
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