Error: The slope and the y-intercept were substituted incorrectly in the slope-intercept form. Correct Solution: y=2x+7
Practice makes perfect
To describe and correct the error, we will write the equation of the line and then compare it with the given one. Let's start by recalling the slope-intercept form of a line.
y= mx+ b
Here, m is the slope and b the y-intercept. We are told the slope is 2 and the y-intercept is 7. Therefore, in the above formula, we can substitute 2 and 7 for m and b, respectively.
y= 2x+ 7
The error was substituting the slope and y-intercept incorrectly in the slope-intercept form.
