3 years ago

At which points does the graph of y=X(squared)+3x-18 intersect the x axis??

Mathematics

1 answer:

Nataly_w [17]3 years ago

5 0

Step-by-step explanation:

Let A be the point at which the graph y=x²+3x-18

intersect the x-axis

As the graph intersects x-axis it's coordinate will be (x,0)

putting the value of y =0

x²+3x-18=0

x²+6x-3x-18=0

x(x+6)-3(x+6)=0

(x+6)(x-3)=0

x=-6, or,x=3

The point A maybe (-6,0) or (3,0)

You might be interested in

(30 Points) Simplify Each Expression And Show Steps/Work

Nutka1998 [239]

1) (2i-4)-(6i+9) = 2i-4-6i-9 = -4i-13

2) (-3+8i)+(3-8i) = -3+8i+3-8i = 0+0i = 0

8 0

4 years ago

Cheryl is organizing her movie collection. If each movie case is 5/8 inch wide, how many movies, in simplest form, can fit on a

elena55 [62]

Answer:

im just tryin to get points

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

Pedro had $235 in his saving account when Jim had $450 in his account. Look at the situation in the image. Which inequality show

11111nata11111 [884]

Answer:

$450>$235

Step-by-step explanation:

This is because, when 235 is subtracted from 450 there is a great difference thats why $450 is greater than $235

4 0

3 years ago

What is the value of the y-intercept of the graph of f(x) = e^1-x – 1?

ra1l [238]

Answer:

(0, e-1) or (0, 1.718) to the nearest thousandth.

Step-by-step explanation:

The y-intercept occurs when x = 0 so here we have:

y = e^(1 - 0) - 1

= e - 1

So the y-intercept is the point (0, e-1)

5 0

3 years ago

9x-2y=19 7x=21 can you please help me answer this question

avanturin [10]

We have such system of eq
$\left \{ {{9x-2y=19} \atop {7x=21}} \right.$
First lets solve second eq
7x=21 /:7 divide both sides by 7
x=3
Now we can substitute it to first equation
9x-2y=19
9*3-2y=19
27-2y=19 /-27 subtract 27 both sides
-2y=-8 /:(-2) divide both sides by -2
y=4 - its the answer

3 0

4 years ago