We see that the slope intercept is y = 8x - 20. So if we substitute x with 2, because x represents the amount of necklaces sold and we are analyzing her net profit after selling 2 necklaces, that gives us y = 8(2) - 20. Which simplifies to y = -4. So by the time Jocelyn sells 2 necklaces, her net profit will be at -4.
We will write the equation in slope intercept form: y = mx + b where m=slope and b=y intercept..
Note the point (0,-5) is the y intercept.. we just need to fine the slope.
Note that since both points have a y coordinate of -5, we can assume this is a horizontal line that goes through -5 on the y axis... so our slope is 0 and the equation of the line is y = -5
Sara buys a sweater with $7.5, so she saved $22.5.
this is 90 60 30 formula for example
90 meet 2x
30 meet x
and
60 meet x√3
so 90 meet 5
30 meet 5/2=2.5
and 60 meet 2.5√3
so the answer is 2.5