Higher November 2022 Paper 2 Q7
7 Here is the graph of \(y = x^2 - 6x + 4\)
(a) Write down the \(y\) intercept of the graph of \(y = x^2 - 6x + 4\) (1)
(b) Write down the coordinates of the turning point of the graph of \(y = x^2 - 6x + 4\) (1)
(c) Use the graph to find estimates for the roots of \(x^2 - 6x + 4 = 0\) (2)
| Answer | Mark | Mark scheme |
|---|---|---|
| 4 | B1 | for 4 |
Additional guidance
Condone (0,4) or 0,4
| Answer | Mark | Mark scheme |
|---|---|---|
| (3, −5) | B1 | cao |
| Answer | Mark | Mark scheme |
|---|---|---|
| 5.1 to 5.3 and 0.7 to 0.9 | M1 | for a correct method, eg marking both intercepts with \(x\)-axis or one correct solution |
| A1 | for answers in the range 5.1 to 5.3 and 0.7 to 0.9 |
Additional guidance
Accept both solutions given as a coordinate for M1eg (5.2, 0.8) or (0.8, 5.2) or (5.2, 0) and (0.8, 0)