The following work represents an attempt to find the equation of the parabola which has a vertex of (0, 0) and passes through the point (1, 3). is the work correct? if not, what is the error?
y=a(x-h)^2+k
0=a(0-1)^2+3
-3=a
y=a(x-h)2+k
y=-3(x)^2
y=-3x^2
a.
the equation is correct.
b.
a = –3 should have been a = 9.
c.
0=a(0-1)^2+3 should have been 3=a(1-0)^2+0
d.
-3x^2 should have been 23x^2 + 3.x

Plot the points (0,6), (3,15.8), and (9.5,0) using the graphing tool, and find the function

Which number line represents the solution set for the inequality - x 24?

Aretha wanted to gather data about the cost of local bowling leagues in her area. she plotted the data and determined that the average bowling league costs consist of a one-time registration fee and a monthly fee modeled by the equation y = 15x + 20. identify and interpret the y-intercept in this model. the y-intercept is 20. this is the cost per month. the y-intercept is 20. this is the cost of registration. the y-intercept is 15. this is the cost of registration. the y-intercept is 15. this is the cost per month.