Finding the Equation of a Straight-Line Graph (VCE SSCE General Mathematics): Quizzes

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Finding the Equation of a Straight-Line Graph
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10 questions from this quiz

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In y=a+bxy = a + bx, what does aa represent?

Y-intercept

In y=a+bxy = a + bx, what does bb represent?

Slope or gradient

What formula calculates slope?

riserun\frac{\text{rise}}{\text{run}}

When does intercept-slope method work best?

When y-intercept is visible

What's a key limitation of intercept-slope method?

Needs y-axis visible (x=0x = 0)

When should you use two-point method?

When y-intercept not visible

For points (0,2)(0, 2) and (5,9)(5, 9), what's the slope?

1.41.4

For points (2,1)(2, 1) and (4,10)(4, 10) with slope 4.54.5, find aa using (2,1)(2, 1).

8-8

How do you verify your equation is correct?

Substitute other point's coordinates

What's an advantage of two-point method?

Works in all situations

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