Page 153 - Mathematics GRADE 9, DE-STREAMED (MTH1W)

▪ the slope (rate of change) is 4 = 1 82
▪ the line intersects the y-axis at 5, so the y-intercept (or initial value) is 5 ▪ an equation for this relationship is y = 1 x + 5
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o from a table of values:
▪ the rate of change (slope) is 2 = 1 since the dependent values increase by 2 as the 42
independent values increase by 4
▪ by using the relationship and working backwards through the table, students can
determine the initial value (or y-intercept) of 5
▪ an equation for this relationship is y = 1 x + 5
o from a concrete representation:
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