Question

The graph of which quadratic equation is shown below?



y = x2 + 4x − 3

y = x2 − 4x + 3

y = −x2 + 4x − 3

y = −x2 − 4x + 3

Answer 1

where is the graph??

Answer 2

sorry i thought it posted

Answer 3

option B is correct

Answer 4

can u explain

Answer 5

general form of quadratic equation is ax2+bx+c.if a>0,graph is an upward parabola,c determines the point where the graph meets the y axis.in this case,we have an upward parabola,so a=3,and the graph cuts y axis at y=3,therefore c=3

Answer 6

easiest way to check your answer is to sub in some figures for x (both positive and negative) and see what corresponding y values it gives you, then plot to see which matches

Answer 7

thanks. can u help with another ?

Answer 8

sure

Answer 9

Tom wants to hang a mirror in his room but the mirror and frame must not have an area larger than 14 square feet. The mirror is 3 feet wide and 4 feet long. Which quadratic equation represents the area of the mirror and frame combined? (The frame must have equal width of x on each side.)



4x2 + 14x − 2 = 0

3x2 + 10x − 14 = 0

2x2 + 12x − 14 = 0

x2 + 7x − 14 = 0

Answer 10

please check the first option,i think it should be 12 instead of 2

Answer 11

well it was given to me as 2 so idk

Answer 12

basicallicy theb question is asking us to calculate the area of the rectangle ABCD,for that we need its length AD and breadth AB.the area is then AB*AD