Master Writing the direct variation equation of a line through a given point

The video tutorial explains how to write an equation in direct variation form that passes through a given point. It covers the relationship between direct variation and the slope-intercept form, emphasizing that the y-intercept in direct variation is zero. The tutorial demonstrates graphing to find the slope and provides alternative methods using the slope formula. It also discusses simplifying the process by using the ratio of y to x to determine the slope.

What is the form of a direct variation equation?

• Y = MX

• Y = MX + B

• Y = B

• Y = M + X

In a direct variation equation, what is the value of the Y-intercept?

• 0

• B

• M

• 1

How do you find the slope using a graph?

• By counting the grid squares

• By measuring the angle

• By calculating rise over run

• By finding the Y-intercept

What is the slope formula when using two points?

• (Y2 - Y1) / (X2 - X1)

• (X2 - X1) / (Y2 - Y1)

• (Y1 - Y2) / (X1 - X2)

• (X1 - X2) / (Y1 - Y2)

If you have two points (4, 10) and (0, 0), what is the slope?

• 5/2

• 4/10

• 2/5

• 10/4

How can you simplify finding the slope using a single point?

• By using the y-x difference

• By using the x/y ratio

• By using the y/x ratio

• By using the x-y difference

What is the result of dividing a number by a fraction?

• Add the fraction

• Multiply by the fraction

• Divide by the reciprocal

• Multiply by the reciprocal