+153 using: y=5x -4
a. calculate the x intercept
b. graph using the x and y intercept method
+9481 y = 5x - 4
a. The x-intercept is the value of x when y = 0 , so plug in 0 for y and solve for x .
0 = 5x - 4 Add 4 to both sides of the equation.
4 = 5x Divide both sides by 5 .
4/5 = x
The x-intercept is 4/5 , or the point (4/5, 0) .
b. Now we need to find the y-intercept. So plug in 0 for x and solve for y .
y = 5(0) - 4
y = -4
The y-intercept is -4 , which is the point (0, -4) .
To graph this, plot the points (4/5, 0) and (0, -4) and draw a line through them.
It should look like this.
+9481 y = 5x - 4
a. The x-intercept is the value of x when y = 0 , so plug in 0 for y and solve for x .
0 = 5x - 4 Add 4 to both sides of the equation.
4 = 5x Divide both sides by 5 .
4/5 = x
The x-intercept is 4/5 , or the point (4/5, 0) .
b. Now we need to find the y-intercept. So plug in 0 for x and solve for y .
y = 5(0) - 4
y = -4
The y-intercept is -4 , which is the point (0, -4) .
To graph this, plot the points (4/5, 0) and (0, -4) and draw a line through them.
It should look like this.
