![]() |
---|
PAGE: 325 | SET: Exercises | PROBLEM: 1 |
![](https://www.mathskey.com/upgrade/web/page_files/step-bottom.jpg)
The equation is .
First find the y-intercept.
The y-intercept is the value of y, when x = 0.
(Substitute x = 0 in original equation)
(Multiply:
)
(Divide each side by negative 4)
(Cancel common terms)
The y-intercept is , so the graph intersects the y-axis at
.
Next find the x-intercept.
The x-intercept is the value of x, when y = 0.
(Substitute y = 0 in original equation)
(Multiply:
)
(Divide each side by 3)
(Cancel common terms)
(Divide:
)
The x-intercept is ,so the graph intersects the x-axis at
.
Graph Using Intercepts:
Use these ordered pairs to graph the equation.
1. Draw a coordinate plane.
2. Plot the points.
3. Draw a line through these points.
The x-intercept is and y-intercept is
.
![](https://www.mathskey.com/upgrade/web/page_files/content-shadow.jpg)
"I want to tell you that our students did well on the math exam and showed a marked improvement that, in my estimation, reflected the professional development the faculty received from you. THANK YOU!!!" June Barnett |
"Your site is amazing! It helped me get through Algebra." Charles |
"My daughter uses it to supplement her Algebra 1 school work. She finds it very helpful." Dan Pease |