Graph y=5/2x-1

Math
y=52x-1
Use the slope-intercept form to find the slope and y-intercept.
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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=52
b=-1
The slope of the line is the value of m, and the y-intercept is the value of b.
Slope: 52
y-intercept: -1
Slope: 52
y-intercept: -1
Any line can be graphed using two points. Select two x values, and plug them into the equation to find the corresponding y values.
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Choose 0 to substitute in for x to find the ordered pair.
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Replace the variable x with 0 in the expression.
f(0)=5(0)2-1
Simplify the result.
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Multiply 5 by 0.
f(0)=02-1
Divide 0 by 2.
f(0)=0-1
Subtract 1 from 0.
f(0)=-1
The final answer is -1.
-1
-1
The y value at x=0 is -1.
y=-1
y=-1
Choose 2 to substitute in for x to find the ordered pair.
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Replace the variable x with 2 in the expression.
f(2)=5(2)2-1
Simplify the result.
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Multiply 5 by 2.
f(2)=102-1
Divide 10 by 2.
f(2)=5-1
Subtract 1 from 5.
f(2)=4
The final answer is 4.
4
4
The y value at x=2 is 4.
y=4
y=4
Create a table of the x and y values.
xy0-124
xy0-124
Graph the line using the slope and the y-intercept, or the points.
Slope: 52
y-intercept: -1
xy0-124
Graph y=5/2x-1

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