Hello there first time poster. I'm currently on my second lesson of math tuition and have been set some questions. I'm not here to cheat I have had a crack at solving them. I would appreciate if people could confirm whether the answers are right and if there's a better method of getting the answer. Thankyou

Question 1.Now Complete

Factorise

[these are the x crossing points]

Y crossing point

minimum point of x (Diff)

y's mimum point putting back into equation

minumum point

Uh oh I went wrong above

It should be:

[thankyou earboth]

Sketch:You calculate actually the y-coordinate of the vertex of the parabola which is indeed the absolute minimum of all possible y-values.

As you may have noticed the vertex is below the y-intercept (0, -60).

Question 2.currently working on

Factorise

[these are the x crossing points]

Y crossing point

16 is y

minimum point of x (Diff)

y's mimum point putting back into equation

[y's minimum point is 51]had assistance of calculator for this bit

Question 3.not complete

Factorise

[these are the x crossing points...I think]

Y crossing point

minimum point of x (Diff)

y's mimum point putting back into equation

i have changed this into a decimal point,

[y's minimum point is -1.75]I believe i have got this wrong because i have not written orSo -2.25^2 is 5.0625 - -4.5 - 4= 5.5625 (is this y?!)

I have redone the orginal question with the correction so other users can see where I went wrong and maybe learn from it .

thankyou for you time , burgoyne