A straight line y = mx meets the curve y = x2 - 12x + 40 in two distinct points. If one of them is (5, 5) find the other

SammyKush011

5 years ago

the solution given is generally correct but incomplete
x = 5 or 7
but points require both x and y values.
y = mx
when x = 5
y= 5 as given by question '(5,5)'
. : m = 1
since x = 7
y = 7*1 = 7
(7,7) D

Ch1zu111

2 months ago

B

54mu3l

2 months ago

How's a person supposed to know that was x^2?

willispark

1 year ago

Hi Samuel;
what if I substitute for the values
(7, 7) into y = x2 -12x + 40
it gives 7 != 7^2 -12(7) + 40
7 != 49 -84 + 40
7 != 5
I think both solutions are having commas. Though (7, 7) and (5, 5) satisfies y = mx but not the other.

MimiBoy911

4 months ago

it supposed to be B
please Myschool make the necessary changes