All categories

3 years ago

Y = 4x-9 y = x-3 Which method and why? Solve, shoving all work

Mathematics

1 answer:

vodomira [7]3 years ago

7 0

Answer:

(2,-1)

Step-by-step explanation:

The ys in both questions are isolated on one side of the equation in both. The numerical coefficient of both is 1. Therefore you should equate the the left side of each equation to the other left side. The solution is the easiest one to solve because there is only 1 unknown on both sides.

4x - 9 = x - 3 Subtract x from both sides.

4x-x - 9 = -3 Combine

3x -9 = - 3 Add 9 to both sides

3x - 9+9 = - 3+9

3x = 6 Divide by 3

3x/3 = 6/3

x = 2

===============

Now use the second equation to solve for y

y = x - 3

y = 2 - 3

y = -1

==============

The solution is (2,-1)

You might be interested in

If a 12 ounce bag of popcorn at the theater cost $5.50. How much would a 30 ounce bag cost? $10.00

Kaylis [27]

Answer:

I think it’s C I’m not sure I seen a question like this before

Step-by-step explanation:

4 0

3 years ago

The cost table shows the average cost, a(x), of

erastovalidia [21]

Reverse the numbers in the table to get:

(52,20) (67.5,25) and (64,30)

The answer would be (52,20)

7 0

2 years ago

Read 2 more answers

Lines s and t are perpendicular. If the slope of line s is 5, what is the slope of line t

Pavel [41]

Slope of line t is -1/5

If two lines are perpendicular, the product of their slopes is -1

8 0

3 years ago

The function h(t) = 150 – 9t represents the height of a ball dropped from 150 feet after t seconds. What will the height of the

Alekssandra [29.7K]

After 1.4 seconds, t = 1.4.
h(t) = 150 - 9(1.4)
Multiply 9 by 1.4 to get 12.6.
h(t) = 150 - 12.6
Subtract 12.6 from 150 to get 137.4.
h(t) = 137.4.
The height of the ball would be 137.4 after 1.4 seconds.
Hope this helps!

3 0

3 years ago

Which statement is true about the discontinuities of the function f(x)?

Leno4ka [110]

Answer:

(a) There are asymptotes at x=3/2 and x=-1/3

Step-by-step explanation:

The denominator zeros can be found by factoring:

f(x) = (x +1)/((2x -3)(3x +1))

Neither of the denominator factors is cancelled by the numerator factor, so each represents a vertical asyptote, not a function hole.

The asymptotes are at the values of x where the denominator is zero:

2x -3 = 0 ⇒ x = 3/2

3x +1 = 0 ⇒ x = -1/3

8 0

2 years ago