Using the information given in the figure, find the values of x and y.
x = 15, y = 9
Given, AB=AC
⟹94=6x+4⟹6x=90⟹x=15
In △ABD and △ACD,
(i) ∠ADB=∠ADC=90∘ ... (given)
(ii) AB = AC ... (given)
(iii) AD = AD ... (common side)
⇒△ABD≅△ADC ... (RHS congruence rule)
Then, BD=CD ... (CPCT)
⇒2y–7=11⇒2y=18⇒y=9