Step-2

Title: Algebra

Grade: Best-SAT3 Lesson: S5-P2

Explanation: Hello Students, time to practice and review the steps for the problem.

Discussion: Step1 Step2 Step3 Step4 Step5

Lesson Steps

Step Type Explanation Answer

1

Problem

In the system of equations above, g and h are constants. If the system has infinitely many solutions, what is the value of g : h:
2y = - x + 25 and gx = - hy + 100

2

Step

The given system of equation are

2y = - x + 25 equation(1)

gx = - hy + 100 equation (2)

3

Formula:

Equation(1) is multiply by the number is 4

4(2y = -x + 25 )

4x + 8y = 100 equation(3)

4

Hint

Since both equations (2) and (3) are now equal to 100, now set them equal to each other.

5

Step

Then find the values of g and h

gx + hy = 4x + 8y

So, here g = 4 and h = 8

6

Step

Now then find the value of g : h

g : h = 4 : 8
g : h = 1 : 2

7

Choice.A

This is not correct because it is double the correct answer

4 : 8

8

Choice.B

This is correct because it’s done the correct calculations

1 : 2

9

Choice.C

This is not correct because it is double the correct answer

8 : 4

10

Choice.D

This is not correct due to mistake in calculation

2 : 1

11

Answer

Option

B

12

Sumup

Can you summarize what you’ve understood in the above steps?

Discussion: Step1 Step2 Step3 Step4 Step5


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