Algebra 1 Tutorial
Understanding Slope-Intercept Form
In this problem, we will determine the slope and y-intercept of line AB. We will put those two values in slope-intercept form: y=mx+b
Step One: Understanding the Question
The question asks us to find slope-intercept form of a line with a slope of 5 that crosses the y-axis at (0,-8).
From this, we must separate the slope and the y-intercept to put the problem into slope-intercept form.
The problem states that the slope is 5, so the slope is equal to 5.
The problem states that line AB crosses through (0,-8). Anytime a line crosses over the y-axis, the point through which it crosses is known as the line’s y-intercept. So, if line AB crosses through the y-axis at y=-8, then our y-intercept is -8.
Step Two: Understanding Slope-Intercept Form
The equation for slope-intercept form is y=mx+b.
Step Three: Filling in Values
As shown in Step Two, slope-intercept form is y=mx+b. To put the values found in Step One into the equation, simply substitute the values for their respective variables.
y=mx+b: Slope-Intercept Form
y=5x+b: Fill in the slope, 5, for “m”
y=5x+(-8): Fill in the y-intercept, -8, for “b”
About The Author
|I am a dual enrollment student through Northview High School in Century, Florida and Pensacola State College. I am currently top in my class with a GPA of 4.425. In 2018, I will graduate with my A.A. in General Education from PSC as well as recieving my high school diploma with merit designation. ...|